Brake for uphauls for mines.



N0. 699,024. Patented Apr. 29, I902."

' C. 'L. E. SCHENK;

BRAKE FOR UP-HAULS FOR MINES (Application filed Feb. 10, IQOQJ (No Model.)

WITH ESSES: ZfwM $10 as co. momumo" wnsnmmun, b. c.

UNITED STATES PATENT @FFICE.

CARL L. E. Y SOHENK, OF \VALKERS MILLS, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO TATE, JONES & COMPANY, INCORPORATED, OF PITTS- BURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BRAKE FOR UPHAULS MINES.

SPECIFICATION forming part of Letters Patent No. 699,024, dated April 29, 1902.

' Application filed February 10, 1902. Serial rt. 9 3,439. (No model.)

has for its object a construction whereby a re turn movement of the chain and cars is prevented in case of the breakage of the u phanlchain.

The invention is hereinaftermore fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a view in elevation of a portion of the up-track of a mine, showing cars in position on the track and engaged by the chain, the latter having my improved brake applied thereto. Fig.- 2 is a transverse section on an enlarged scale,

the plane of section being indicated by the line II II, Fig.1; Fig. 3 is a plan View of a portion of 'the track and the uphaul-chain havingmy improved brake, and Fig. 4 is a transverse section on a plane indicated by the line IV IV, Fig. 2.

Inthe practice of my'invention the upha ulchain 1 is constructed in the usual or anysuitable manner and is provided, as is customary, at certain intervals with a projection or abutment 2, extending up beyond the lower edge of a flange plate or projection 3 on the bot tom of the car, so that during the movement of the chain this abutment will bear against the flange-plate and push the car up along the inclined track. In order to support this abutment vertically and insure its engagement with the flange-plate, supporting-rollers 4 are mounted on pinspassing through the block or abutment and projecting into guidcways 5, secured to the cross-ties of the track. In order to prevent a return or downward movement of the chain and cars in case of therupture of the former, I provide suitable brakearms connected to the chain at intervals and preferably at the points where the abu tments 2 are secured, said brake-arms beingso constructed as to engage a stationary portion of the track in case of a return movement of the chain or cars, but moving freely along such track or stationary portion of the track while the car is moving upward. A convenient construction to this end consists in arms 6, pivotally mounted on the blocks or abutments and extending laterally over a third rail 7, arranged along between the chain-guide and one of the rails. These arms,are provided at their outer ends with fingers 8, projecting downwardly on opposite sides of this rail and adapted when the arms are shifted to an angle other than aright angle to the rail to grip the latter tightly. During the upward movement of the chain'and cars the arms are held in a position at right angles to the chain, so that neither of the fingers will take a grip on the rail, by any suitable meanssuch, for example, as that clearly shown in Fig. 3 and consisting of fingers 9,

secured to the pivotal ends of the arms and bearing against the sides of theblocks.

WVhil'e the chain or car is passing upward these fingers will hold the gripping-fingers in such position that they will slide freely along the sume a position at an angle to the rail less than a right angle and cause the fingers to grip the rail, and thus prevent any further rearward movement.

In order that the fingersof the arm may always be in gripping position, it is preferred 'to apply springs 10 to the arms-as, for example, by interposin'g such springs between the fingers 9 and the abutmentsso that the outer ends of the arms will be thrown forward at an angle to the rail. While in this position the rubbing of the fingers along'the rail will tend to compress the springs and move the arms to unlocking position; but as soon as the chain makes any rearward movement the fingers will be caused to grip the third rail firmly, and that with only a-very slight rearward movement of the chain.

I claim herein as my invention, I

1. An uphaul for cars having in combination a chain, a rail parallel with the line of movement of the chain, an arm havingone end connected to the chain and means on the opposite end of the arm operative on a rearward movement of the chain to grip the rail, substantially as set forth.

2. An uphaul for cars having in combination a chain, a rail parallel with the line of movement of the chain, and an arm pivotally mounted on the chain and provided at its outer end with fingers projecting down on opposite sides of the rail, substantially as set forth.

3. An uphaul for cars having in combination a chain, a rail parallel with the line of movement of the chain, an arm pivotally mounted on the chain and provided at its outer end with fingers projecting down on opposite sides of the rail, and means for holding the CARL L. E. SCHENK.

Witnesses:

DARWIN S. \VOLCOTT, F. E. GAITHER.

I have hereunto set 30 

